Researching WALKER, NORTHCOTT, MCKENZIE, BIDDLE

Just found this website today. Researching WALKER(James Walker b. Scotland 1788 came to Canada early 1800s), NORTHCOTT (John Northcott, b. 1833 England, came to Canada about 1851), MCKENZIE(from Caithness area, Scotland--George McKenzie b. 1926 came to Canada in the 1940s), BIDDLE(Frederick Biddle b. 1872 in Birmingham, England came to Canada about 1900. His grandfather, aunt, and two uncles emigrated to Utah about 1860, but his father, John, stayed in England.)
Other surnames through marriages: STEWART, EDWARDS, MACBRAIRE, SMITH, GAY, HAYTON, NORTHCOTT, WILLMORE